U-Bolt M10 x80 mm Thread, 77 mm ID, 129 mm IH Galv A320 L7 High tensile steel Nuts not included with this item Graphskill standard U-Bolt ASTM A320 L7 High Tensile Steel. Galvanised - A duller finish than BZP, typically 50 microns thick covering of Zinc and therefore provides much more protection suitable for many out door applications All Measurements in mm Inside Diameter : 77 Inside Height : 129 Leg Centers : 87 Leg Length : 90 Material : A320 L7 Galvanised High tensile Steel Pipe Nominal Bore : Suggested Pipe OD : 75 Thread length : 80 Thread Size : M10 Our manufacturing tolerances are + / - 1 mm) We use roll threading so the diameter of the bar is usually less than the thread size. Please ask if unsure If using your own nuts on galvanised products please ensure they are tapped oversize to allow for the galvanised layer